Chibi seems to have completely distanced himself from RO. Don't take this as absolute truth, but I doubt Yggdrasil Online will ever return.

Asgard is still in progress, we're working on some core stuff right now, but it is certainly coming (when we manage to get things complete enough to launch). However, I don't really do any status updates here anymore. This place is pretty much only used as a memorial to Ygg.